/**
 * SOLUCIONES ESG S.A.S. - Estilos Corporativos
 * Paleta de Colores:
 * - Azul ESG: #008ECC
 * - Gris Oscuro: #2C3E50
 * - Cian: #00B4D8
 * - Blanco: #FFFFFF
 */

/* ========================================
   1. RESET Y BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #008ECC;
    --color-secondary: #00B4D8;
    --color-dark: #2C3E50;
    --color-light: #FFFFFF;
    --color-gray: #F4F6F8;
    --color-text: #333333;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-light);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-dark);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   2. HEADER Y NAVEGACIÓN
   ======================================== */
.main-header {
    background: var(--color-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    gap: 2rem;
}

.logo {
    flex-shrink: 0;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-dark);
}

.logo-text strong {
    color: var(--color-primary);
    font-weight: 800;
}

.logo-tagline {
    display: block;
    font-size: 0.75rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--color-dark);
    font-weight: 600;
    padding: 0.5rem 0;
    display: block;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

/* Dropdown Menu */
.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-light);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 220px;
    list-style: none;
    padding: 0.5rem 0;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
    border-radius: 8px;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-menu a:hover {
    background: var(--color-gray);
    color: var(--color-primary);
}

.dropdown-menu i {
    color: var(--color-secondary);
    width: 20px;
}

.header-contact .contact-btn {
    background: var(--color-primary);
    color: var(--color-light);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.header-contact .contact-btn:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-dark);
    transition: var(--transition);
}

/* ========================================
   3. HERO SECTION
   ======================================== */
.hero {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-light);
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,112C1248,107,1344,117,1392,122.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: bottom;
    opacity: 0.2;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: var(--color-light);
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero .cta-button {
    background: var(--color-light);
    color: var(--color-primary);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.hero .cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* ========================================
   4. SECCIONES GENERALES
   ======================================== */
.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--color-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-primary {
    background: var(--color-gray);
}

/* ========================================
   5. GRID DE SERVICIOS
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--color-light);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: var(--transition);
    border-top: 4px solid var(--color-primary);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.service-card .icon {
    font-size: 3rem;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-dark);
}

.service-card .norma {
    font-size: 0.85rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: 1rem;
    display: inline-block;
    background: rgba(0, 180, 216, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.service-card p {
    color: var(--color-text);
    margin-bottom: 1rem;
}

.service-card ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: bold;
}

.service-card .btn-more {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--color-primary);
    border-radius: 50px;
    transition: var(--transition);
}

.service-card .btn-more:hover {
    background: var(--color-primary);
    color: var(--color-light);
}

/* ========================================
   6. EQUIPO
   ======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.team-item {
    background: var(--color-light);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.team-item i {
    font-size: 2.5rem;
    color: var(--color-primary);
}

.team-item span {
    font-weight: 600;
    color: var(--color-dark);
}

/* ========================================
   7. FORMULARIO DE CONTACTO
   ======================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.contact-info {
    background: var(--color-primary);
    color: var(--color-light);
    padding: 3rem;
    border-radius: 12px;
}

.contact-info h3 {
    color: var(--color-light);
    margin-bottom: 2rem;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-info-item i {
    font-size: 1.5rem;
    color: var(--color-secondary);
}

.contact-form {
    background: var(--color-light);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #E0E0E0;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    background: var(--color-primary);
    color: var(--color-light);
    padding: 1rem 3rem;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.btn-submit:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ========================================
   8. FOOTER
   ======================================== */
.main-footer {
    background: var(--color-dark);
    color: var(--color-light);
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h3,
.footer-col h4 {
    color: var(--color-light);
    margin-bottom: 1rem;
}

.footer-slogan {
    color: var(--color-secondary);
    font-style: italic;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
}

.footer-links a:hover {
    color: var(--color-secondary);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-contact i {
    color: var(--color-secondary);
    margin-top: 2px;
}

.footer-contact a {
    color: rgba(255,255,255,0.9);
}

.footer-contact a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    text-align: center;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

/* ========================================
   9. PÁGINA 404
   ======================================== */
.error-page {
    text-align: center;
    padding: 6rem 0;
}

.error-page h1 {
    font-size: 8rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.error-page h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.error-page p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ========================================
   10. RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-light);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        display: none;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .navbar {
        flex-wrap: wrap;
    }

    .header-contact {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: 1rem;
    }
}